What does "angle iron" mean?

A length of iron or steel, having an L-shaped cross section, used as a structural support

What is a synonym for "angle iron"?

Common synonyms include: angle bracket.

noun

noun ·Rare ·Advanced level

Noun

1
A length of iron or steel, having an L-shaped cross section, used as a structural support
"The homestead […] was of corrugated iron on an angle-iron frame."
2
an L-shaped metal bracket wordnet

"The homestead […] was of corrugated iron on an angle-iron frame."